Guestphone HA9998TSD Telpon Hotel, telephone hospitality

Spesifikasi : - Single line telephone system - 8 buttons guest service - Music hold - Speaket phone - Message waiting & ring indicator - Dual tone dialing. - Maximum length of the memory number is 16 digits and the memories will not missing even though the power is off. - Four level cycles for volume-adjusting of ringing and hands-free. - hands-free, redialing, R-key function - Thunder protection and anti-EMI - Waterproof and dampproof (unique patent, beware counterfeit) - Operating conditions: Environmental temperature: -10~ +40℃ Atmospheric pressure: 86~ 106Kpa Relative humidity: 10%~95% Environmental noise: ≤60dB（A） Working Frequency: 300~ 3400Hz